Design a standalone solar street light or area lighting system with LED fixtures and battery storage.
Input Parameters
Results
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LED Power
W
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PV Panel Size
W
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Battery Size
Wh
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Battery at 12V
Ah
Note: Modern LED street lights achieve 150-200 lm/W. Use LiFePO4 batteries for -20 to +60 C range. 2-3 days autonomy typical.
Reference
LED Power = Lumens / LED Efficacy [W]
Daily Energy = LED Power x Operating Hours
PV Size = (Daily Energy / (Sun Hrs x 0.80)) x 1.3 margin
Battery = Daily Energy x 2.5 autonomy / 0.5 DoD